This is a good game. I don't think it's a Roguelike game and thus I don't think it fits the theme. But "winning" a game jam is not at all important, and making a good game is more important. There's things you could do with graphics to make it more visually appealing, and I think you know this. Also, "reach the goal" is not really a challenge because I can eventually accumulate money to complete the mission, and I have no uncertainty about this (though maybe you're looking for a more relaxed experience anyway). But add another restraint, such as a timer to complete a mission, and this is a great prototype you could expand on.